如何用FFmpeg旋转视频? [英] How can I rotate video with FFmpeg?
本文介绍了如何用FFmpeg旋转视频?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我现有的视频是 .mov
并且垂直播放,但是当我使用FFmpeg将其转换为 .flv
水平播放
My existing video is .mov
and plays vertically, but when I convert it to .flv
with FFmpeg it plays horizontally. How can I correct the converted video to play vertically?
function convert_flv($vidtime, $infile, $outfile, $w = 0, $h = 0, $extra_infile = '', $extra_outfile = '') {
$parms = '';
if($w == 0 && $h == 0) {
//$parms .= '-sameq ';
} else {
$parms = '-s {$w}x{$h} ';
}
if($vidtime==60)
{
$cmd = ffmpeg($infile, $outfile, $parms.' '.$extra_infile, '-t 00:01:00 -ar 22050 -r 15 -f flv '.$extra_outfile);
}
else
{
$cmd = ffmpeg($infile, $outfile, $parms.' '.$extra_infile, '-t 00:04:00 -ar 22050 -r 15 -f flv '.$extra_outfile);
}
print_r($cmd);
return $cmd;
}
推荐答案
SVN,您可以使用-vftranspose = 1旋转视频。
这是一个使用命令行的示例,我相信很容易转换为php:
With the current version pulled from SVN, you can rotate video using -vf "transpose=1".
Here's an example using the command-line, which I'm sure is easy to convert to php:
ffmpeg -vf "transpose=1" -i input.mp4 output.mp4
(以下是我如何构建ffmpeg,以帮助您)
(here's how I built ffmpeg in case this helps)
svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg
cd ffmpeg
./configure --enable-shared --disable-mmx --arch=x86_64
make
sudo make install
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